[Lldb-commits] [PATCH] D63491: DWARF: Use a more compact internal representation in the manual dwarf index

Pavel Labath via Phabricator via lldb-commits lldb-commits at lists.llvm.org
Tue Jun 18 06:28:48 PDT 2019

labath created this revision.
labath added reviewers: clayborg, JDevlieghere, aprantl.
Herald added a subscriber: arphaman.
labath added a parent revision: D63428: DWARF: Add "dwo_num" field to the DIERef class.

Reduce the size of the manual index by storing the entries in a more
compact form. This introduces the CompressedRef class, which is similar
to the DIERef class, but it is more compact because it lacks the
unit_offset field (which is not necessary now, as the unit is uniquely
identified by the rest of the fields). The user_id_t representation
would have the same size, but I did not use that here because:

- it's more complicated to convert it to/from a DIERef
- it's more clunky to handle as it is just an integer

The new class is for internal use only. It is converted to a regular
DIERef before returning it to the outside world.



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